Quick Determination of Soil Quality Using Portable Spectroscopy and Efficient Multivariate Techniques

Table 1

Wet chemistry measurement of soil health properties.

Parameters	No. of samples	Ranges	Mean	STD
N (%)	77	0.010–0.26	0.059	0.040
	33	0.015–0.18	0.063	0.042
P (mg·kg^−1)	77	0.0045–3.99	0.769	1.230
	33	0.0081–3.54	0.766	1.257
K (cmolc·kg^−1)	77	0.020–0.90	0.199	0.202
	33	0.020–0.74	0.200	0.228
Mg^2+ (cmolc·kg^−1)	77	0.16–3.99	0.873	0.788
	33	0.08–3.54	1.043	0.978
Ca^2+ (cmolc·g^−1)	77	0.64–18.88	3.562	3.948
	33	0.72–21.36	2.744	4.067
pH	77	4.83–7.57	6.233	0.781
	33	4.81–7.39	5.935	0.599